Self-locking muffler bar for belt clamps



p .9 L.- J. MILDREN 1,774,807

SELF LOCKING MUFFLER BAR FOR BELT CLAMPS Filed Nov. 16, 1928 l 0013/ J/YzZ/dren v\1: Y p i9 TTORIVEY v IIQ MILPRENQ OF PoNc 1T .oKxe-HMe1" seer- 0 M L BAE3 Q :7 i Applicationlined November 1 ,;1e2afsnai 319,$ 4Q'.

, "l Thisrelates to self-looking Imuiiler bars for belt clamps and the primary object is to provide means for preventing the belt olamp from making a noise asit passes 5 over Ltlie pulley. The muflier barv is anim- V I provement on a knowntypeof belt clamp andit can be'so associated therewith that noises common to this type ofelampwill be prace tica'lly eliminated. I

l0 i V tain novel construction which will be specifioally described hereinafter,"reference being 1 had to the accompanying drawings in'v'whioh Fig. 1 is a perspective vie'w'ofa pulley and I part of a belttowhiehimy invention isap plied. Fig.

broken away. 7 r x Fig. 8 is atop plan'view of the belt clamp. F'g; 4 is an enlarged sectional View on the line4-4 of Figure 3.- I

' Fig. 5 is a detail view and I r 1 Fig.6 is a View: partly in perspective and I partly in section of the muflier b ar. V The two ends 1 and 2 of the belt 3,v are secured together by a belt clamp. The. belt 7 clamp. embraces a frame consisting ofja substantially rectangular member 4 with an elongated slot5 so that the frame has side bars"- 6 and 7 -and end connecting webs 8,and 9Q Theends of the belt are passed up through" the slot and then awedge-shaped clampingv 135 bar 10 is inserted intothe slot to wedge the ends of the belt againstjthe'finner inclined faces ofthe side bars 6 and 7. The clamping 7 bar is provided wi th oppositely disposed belt engaging teeth or projections-11 and'12 to p 4 bite into the belt "strueture'as indicated in v Figure 4:. The pull on theend of the belt" forcesthe wedge-shaped bar 10 into the slot so -the 'greater therpull,,the greater the wedgfingfa'ction and consequently, the; clamping eflt'ectof-the bar 10.

' V a The" structurethus far describedisiold and" wellknown. With such a structure therejis a slot-or i'ecessz13 at thebas'e of the frame 4 I and asthe-belt clamp passes over the pulley, 5Q itmakes an objectionable sound; Myfinvens To this end the'lnvention 'consists in cer-J 2 I a] perspective view :of the belt" clamp frame, part of one of the sides being of the clamping bar over the pulley in a substantially noiseless tion'hasto do "with aimufiler or silencer for, pr'eventin'gjthis objeotionable' soundl flt pQl'l-v i J sistsf ofa' 'non-metallicf 'bar flli' lsee -Fig. 6) o which is triangular in cross-section. is 7 provided with :a flexible locking-bar 1,5, the t5:

respective endspf'which are adapted to 'be inserted'into the holes oropenings 16 and 17 i-inthelwebs or, ends Sand 9 offtlie frame 4.; 2

"the belt at'the b'ottomf 'ofithe" fram -so that the surfaces 18 and 19-ifit snu'gly'against'the bends'inthebeltQ Since the bar 14 isniade' 5;

of flexible non metallic'fmaterial suchlfia's' conforrnlto the I curvatures orhe bends in 6 lfabrioiffibrous materialjiorflsound deadeningfifi I v c ornp ositio n and since the flexible locking'rod g o "isiernbedded inthe'jbaig it'is obvious that the 7 v bar and-Tod? oan be fiexed'to the" position shown in dotted linesQO, Figure 6', ,so the 1 length of the bar can be shortened to permit "l i j I the projeoting'endsfof the rod'to snap into I 1;] i the openings 16 and 17 of theifra'me, therei I J byholding. the mufiier barin-loekingposition,

withirespect'to the fraine'l and inintimate contact with the belt. Therefore, as'the belt clamp passes'overithe pulley 21 or over a I similarfpulley, an unbroken surface will be c presented to the pulley, thus eliminating liability of soundsso th'at the beltwillrun manner."v s i I do not wish to be limited to any particula-rv material for the barisinoe thereoare-nw :merous sound deadening materials, the essentia'l feature of myinvention residing more 3 particularly in a barfor bridging theifgapi i between thebendsof'thebeltt ,Ofcourse,it-f 1;; o 1i isto' be understood that when the belt clamp istobe removed, the bar can be flexedto' withdraw the ends'21 and 22 of the rod from the holes or openings 16 and 17.,

'WhatII claim and'desire to secure byL i ters-Patent is i 1. In combination a belt clamp having. a frame with openings in its ends of a flexible muffler bar providedwith end'projections for engagement with the openings in the end the frame 2.? In cOmbination a' m'p h l ing bar in the frame, of a belt engaging mufilenbar having belt engaging sides and a, locking IOd'C a IT leCl by the bar, the ends of ,WhlCh engage the openings in the frame.

having end' projections to' engage; openings 1 inthe'belt clamping frame;

. t and a; flexible r'o'diembedded in the bar, the I en'cls of which project beyond the'ends o'f'the V 5; A flexible mufiler bai' 'for'belt clamps,

4. Alfiexible mufllef bai foi beltlelainps I triangular in cross-sectibn and belt elzi-mp en- 1 end projections to engage'the endopenings l gaging projections'on the bar.

- of so und'deadeningmaterial and aLbel-t clamp,

engaging red ,embeclcled in the bar, the "ends f which proje'ctbeyqncl the ends, of the bar.

. i Z 7'; Ineombination, a'b'elt clamp having a "20 clamping bar "in therfmme and n flexible '6, A muffler bar for bel't Clamps eonsieting' l eetangular frame with endopenings, a belt mufiien bar beneath the clamping bar having in'the belt clamping frame,

8,. In combination sa f belt clamp a reetangular frame with end Openings, a; belt 3 damping bar in the frame, a flexible muffler v consisting' of sounddeadening material I andfa gro cl emb'eddedin the bunt-he ends of f flwhieh pi oje'et beyond tl evQsouncl; deadening mater al to engageithe openings-inthe frame.

Intestimony whereof I'affiX my signature. 1

1 LOBY J; MILDREN. 

